Smart ring maker Circular announced its next-gen Ring 2 with ECG (electrocardiogram) functionality and AFib (atrial fibrillation) detection at CES 2025 Unveiled on Sunday in Las Vegas. The wearable is set to go on sale in February or March for $380.

Circular, pioneers of smart ring technology, is announcing its next gen Ring 2, which is set to revolutionize the wearable landscape, blending cutting-edge

I could count on one finger the amount of smart rings that offered a one-line ECG in a small package. Bodimetrics’ Circul+ debuted in 2021, but where it excelled in heart-monitoring features it fell short in style — or even looking like a real ring you’d want to wear 24/7.

The Circular Ring Gen 2, which was announced on Jan. 5 just ahead of CES 2025, is one of few smart rings that can detect atrial fibrillation. It's a feature that's become common in smartwatches but is still relatively rare on smart rings.

Circular is making the process of buying a smart ring seamless by involving AI. And it seems to be a work in progress right now.

Circular has officially announced the Circular Ring 2, its second generation smart ring that includes a new feature that will certainly pique the interest of those that want to keep a closer eye on their heart health.